Blue Streak Triple Silicone Universal 40 Spark Wire Set with 180 and 90 Boots Blue Streak custom cut to your length 8mm Triple Silicone wire sets can be used with stock coils or when upgrading to a performance coil. These spark plug wire sets meet or exceed all of the factory's requirements. Plus, the special XXX triple silicone wire features quality construction of silicone throughout the jacket, insulation, and core, which assures high temperature resistance and high durability. Features: Wire sets also offer maximum RFI suppression and feature high dielectric strength silicone boots, OEM-style terminals that lock onto the spark plug, and much more. Rated at SAE Class E J2031 with a continuous operating temperature of 450F